Drier.



F. K. FISH, JR.

DRIER. APPLICATION FILED SEPT. e. 1916.

' Patented July 16, 1918.

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rr s"-- FREDERICK K. FISH, JR., 013 NEW YORK, N. Y., ASSIGNOR TO LUMBER TIE AND TIMBER VULCANIZING COMPANY, OF NEW YORK, N. Y. I

DRIER.

Application filed September 6, 1916.

To all whom it may concern.

Be it known that I, FREDERICK K. FISH, J12, a citizen of the United States, and resident of New York city, in the State of New York, have invented certain new and useful Improvements in Driers.

My invention relates more particularly to that class of driers used for drying lumber and analogous substances, and has for its purpose the prevention of the warping and twisting of the material being dried.

The improvement consists of a pressure plate carried in the drying chamber and adapted to hold the lumber against warping.

It is a well known fact to the lumber industry that lumber when drying has a marked tendency to warp and twist especially when placed in a container and subjected to a high degree of heat, thereby greatly reducing its commercial value.

This fact has proved to be a great draw-back to all of the driers now in use, and causes the loss of great sums of money each year by rendering a great percentage of the lumber so dried of little value commercially.

By the use of my improved drier, the warping and twisting of the lumber is absolutely and positively prevented, and lumber coming from my improved drier will be free from all warping and twisting, and perfectly straight and will command a much higher price by reason of this condition.

A more comprehensive idea of my improved drier may be had by reference to the drawings which are made a part of this application in which Figure l, is a longitudinal sectional view of an equalizing chamber showing my pressure plate installed therein. Fig. 2, is a front elevation of an equalizing chamber with the front door omitted and showing a truck load of lumber therein, with my pressure plate in operative position. Fig. 3, is a front elevation of a retort with the front door omitted and showing my pressure plate installed therein.

Referring to the drawings more particu- Specification of Letters Patent.

Patented July in, 1918.

Serial N0. 118,762.

larly by numerals, 1 is the top wall of an equalizing chamber, 2 is the rear wall of said chamber, 33 are the side walls thereof, 44 are the steam heating coils for the purpose of supplying heat to the said chamber, 5 is an exhaust flue at the rear of the chamber, and 6 is a cut off extending transversely through said fine for the purpose of regulating exhaust from said chamber, 7 being a handle by which said cut 01? is operated, 8 is a channel iron extending longitudinally through the equalizing chamber and carrying on its under side, T beams 9, which are placed at right angles to the channel iron with their web portion extending downward. The channel iron is suspended in the equalizing chamber by screw threaded rods 10, which are adapted to engage nuts 11, having arms 12, for turning nuts 11 which will cause threaded rods to travel in a vertical line which in turn will cause plate 8 to move upward or downward according to the direction in which arms 12 are turned. 13l3 represents tracks upon which truck 14 which is loaded with lumber 15, is adapted to travel.

It will be readily seen by reference to Fig. 2, wherein the pressure plate is shown as screwed down upon the top of lumber 15, that it is impossible for the lumber 15 to warp or twist in the slightest degree.

I have repeatedly charged my equalizing chamber as shown in Fig. 2, with green lumber, and submitted it to a varying and intense heat until it was thoroughly dried from the center out, and have had the lumber come out free from any sign of twisting or warping.

Having thus described my invention, what I claim is:

1. In a container, a plate extending longitudinally and intern'iediate the top and bot-- tom thereof, a plurality of dependent members carried transversely of said plate and means for raising and lowering said plate in a vertical line.

2. In a container, a plate carried by the top thereof, a plurality of dependent members carried by said plate intermediate its ends and means for raising and lowering either end of said plate independently of the other end.

8. In a Container, a plate formed bf channel iron, a plurality of dependent member's carried transversely and by the flanges of said channel iron and means for raising and lowering said plate.

4:. In a 'con'tainer a plate extending 10ngitndinally thereof, dependent members carried transversely of said plate and screwthr'eaded means for 'aising and lowerin said plate.

FREDERICK K. FISH, J11.

Copies of this patent may be obtained for liye parts each, by addressing the Commissioner of Patents,

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